My new-to-me truck has a 6" BDS lift. I've been under it a lot lately flushing things, spraying undercoating, etc. I noticed that the 2-piec drive shaft is not even close to straight; that's what caught my eye. I thought to myself "how can that work properly like that?" I know there is probably a slight tolerance on the angle at the carrier bearing, but mine is probably a 7-8° angle off of straight.

Should this be more or less in direct line? That's what I would think at least. I do have a slight vibration at 2-5 mph, but that is about it. And it is more pronounced if I am turning during that first bit of acceleration.

I think I am going to do the washer shim experiments and then make a solid spacer when I find the right position. Any other suggestions?

Also, is that the factory carrier bearing bracket? I bought the truck with the lift, so I don't know the stock configuration.

You need carrier bearing shims. I heard you want 1/4" drop for every 1" of lift. Mine had vibration at low speeds and completely went away when I shimed it. You can use bar stock and just drill two holes in it. My 6" revtek lift came with two shims each about 3/4" thick. You want your drive shaft as straight as you can get it.

Were your shims angled at all? I dropped it using 3/8" washers to see how far I would need to go.probably need a little more, I am running out of threads on the bolts and the hanger looks like it needs to angle forward a bit in order to the sit a 90° with the drive shaft.

I'm definitely in need of longer bolts. I 8 1/8" washers on each side now, and it still has a bit of vibration and the drive axle is visibly crooked. I'll have to go to 1.5" I think for my 6" lift. I suppose I need to measure my lift too....bought it lifted and I'm not sure how high it is. I thought 6", but I was looking at that "lifted 6.4L" thread and I'm not sure if it's 6" or 8"....

Do you think stainless bolts will work or should I just get the nickle plated? It's not much difference in price for two bolts. And can I just use regular hardware bolts or do I need to locate some like the originals with a tapered tip?

Hopefully Fleet Farm has some bar stock as well....otherwise I'll have to search around for that as well.

I was thinking, since this is just a spacer for mounting the bracket lower, and not really a bracket that gets much force on it, especially impact.....could I make the spacers out of extruded plastic, HDPE actually? We have 1/2" HDPE sheets at work, similar to the density of a cutting board, but thicker. Sure would be a lot easier to cut and drill!!

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